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union/intersect vs. or/and semantics

659140Jun 2 2009 — edited Jun 2 2009
Hello...

I have non-correlated subqueries that are currently using or/and operators between each of the subqueries.

For example

sub_query_1
OR
sub_query_2

The questions are:

1. if I change the OR operator to an INTERSECT operator, does that return the same results?
2. Are the semantics of OR/INTERSECTS, AND/UNION the same?

Thanks,
Jim
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Locked on Jun 30 2009
Added on Jun 2 2009
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